All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=744686

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=7be1dd13d7403a249af064538987d14590627cbbaa6a9847d61c4ec9f443eef1


Bot(s) for this bug's original alert(s):

android-webview-nexus5X

Started bisect job https://chromeperf.appspot.com/buildbucket_job_status/8973806162102276896

=== BISECT JOB RESULTS ===
Perf regression found with culprit

Suspected Commit
  Author : Sunny Sachanandani
  Commit : 7a4f2242badc95b109bb551e2ec1ebcebc2ff0d2
  Date   : Wed Jul 12 02:27:18 2017
  Subject: cc: Add crash key for debugging BeginMainFrame renderer hang.

Bisect Details
  Configuration: android_webview_arm64_aosp_perf_bisect
  Benchmark    : thread_times.key_silk_cases
  Metric       : thread_renderer_compositor_cpu_time_per_frame/thread_renderer_compositor_cpu_time_per_frame
  Change       : 4.88% | 3.55316385089 -> 3.72667052446

Revision             Result                    N
chromium@485733      3.55316 +- 0.0588576      6      good
chromium@485771      3.54696 +- 0.063091       6      good
chromium@485790      3.55958 +- 0.0674434      6      good
chromium@485799      3.55319 +- 0.0485943      6      good
chromium@485801      3.57099 +- 0.0357445      6      good
chromium@485802      3.75966 +- 0.15154        6      bad       <--
chromium@485804      3.75334 +- 0.0377234      6      bad
chromium@485808      3.72667 +- 0.0315319      6      bad

To Run This Test
  src/tools/perf/run_benchmark -v --browser=android-webview --output-format=chartjson --upload-results --pageset-repeat=1 --also-run-disabled-tests thread_times.key_silk_cases

More information on addressing performance regressions:
  http://g.co/ChromePerformanceRegressions

Debug information about this bisect:
  https://chromeperf.appspot.com/buildbucket_job_status/8973806162102276896


For feedback, file a bug with component Speed>Bisection